package com.lzy.web.admin;

import com.lzy.po.Type;
import com.lzy.service.TypeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.validation.Valid;
import java.util.List;

/**
 * @autor shkstart
 * @create 2021-01-05 23:13)
 */
@Controller
@RequestMapping("/admin")
public class TypeController {
    @Autowired
    private TypeService typeService;


    @GetMapping("/types")
    //分页条数，根据id排序,倒序
    public String typesPage(@PageableDefault(size = 5,sort = {"id"},direction = Sort.Direction.DESC) Pageable pageable,
                            Model model){
        model.addAttribute("page",typeService.listType(pageable));
        return "admin/types";
    }

    @GetMapping("/types/input")
    public String toInputPage(Model model){
        model.addAttribute("type",new Type());
        return "admin/types-input";
    }

    @PostMapping("/types")
    public String post(@Valid Type type, BindingResult result, RedirectAttributes attributes){

        //重复名称添加失败
        Type typeName = typeService.getTypeByName(type.getName());
        if(typeName != null){
            result.rejectValue("name","nameError","名称重复,新增失败");
        }

        if(result.hasErrors()){
            return "admin/types-input";
        }
        Type t = typeService.saveType(type);
        if(t == null){
            attributes.addFlashAttribute("message", "新增操作失败");
        }else{
            attributes.addFlashAttribute("message", "新增操作成功");
        }
        return "redirect:/admin/types";  //重定位要加/
    }


    @GetMapping("/types/{id}/input")
    public String editInputPage(@PathVariable("id") Long id, Model model){
        model.addAttribute("type",typeService.getType(id));
        return "admin/types-input";
    }

    @PostMapping("/types/{id}")
    public String editPost(@Valid Type type, BindingResult result, @PathVariable Long id, RedirectAttributes attributes){

        //重复名称添加失败
        Type typeName = typeService.getTypeByName(type.getName());
        if(typeName != null){
            result.rejectValue("name","nameError","名称重复,编辑失败");
        }

        if(result.hasErrors()){
            return "admin/types-input";
        }
        Type t = typeService.updateType(id,type);
        if(t == null){
            attributes.addFlashAttribute("message", "更新操作失败");
        }else{
            attributes.addFlashAttribute("message", "更新操作成功");
        }
        return "redirect:/admin/types";  //重定位要加/
    }

    @GetMapping("/types/{id}/delete")
    public String deleteType(@PathVariable Long id,RedirectAttributes attributes){
        typeService.deleteType(id);
        attributes.addFlashAttribute("message","删除操作成功");
        return "redirect:/admin/types";  //重定位要加/
    }
}
